Work-support-controlling mechanism.



L. A. CASGRA|N. WORK SUPPORT CONTROLLING MECHANISM. 1,279,512.

APPLICATION FILED JAN.2B, I915- a f z 54 M 7 0 0 w wg L. A. CASGRAIN.WORK SUPPORT CONTROLL' ING MECHANISM.

APPLICATION FILED JAN.28| 1915.

Patented Sept. 24,1918.

3 suns-sugar a.

' tween the work Unrrnn sear LOUIS A. CASGBAIN, or BEVERLY,ma-ssaoirnsnrrs, AssIeno'a, BY inns an assiea,

MEN' IS, TO UNITED SHOE MACHINERY A CORPORATION OF NEW JERSEY.

CCRPORATION, or PATEBSO1\T,:NEW JERSEY,

wonK-surron'r-oonrno inG MECHANISM."

Application filed January 28, 1915.-

provements in li ork-SupportGontrollingi Mechanism, of which thefollowing descrip tion, in connectionwith the accompanying drawings, isa specification, like .reference characters on the drawings indicatinglike parts in the several figures. f

'This invention relates to work supports and to work support controllingmeans which are particularly adapted for machines for use in themanufacture'of boots andshoes and 1s hereln shown herein shown asincorporated is particularly adapted for inserting slugs or fastenings1n the top lifts of the heels of boots or shoes, an operation whichrequires for its successful performance substantial uniformity in thework presenting operations. In 'such machines the work is usuallyclamped besupport and a work abutment at the time the fastening isinserted, and between the successive fastening insert ing operations arelative releasing movement of the work support and the work abutmenttakes place, mechanism being generally pro-.

vided for making'this releasing movement uniform regardless ofdifferences in the amount of separation of the work support and the workabutment as the work varies in thickness. This mechanism ordinarilycomprises a spring by which the relative movements of the worksupportand its re-.

leasing mechanism that are necessary to acconnnodate'the variations indimensions of the clamped work are effected, the spring aiding usuallyin moving the work support again into work work abutment. Toinsureuniformity o the clamping action between the'work sup abutment itis desirable port and the work Specification of Letters Patent.

ally made for an adjustment of the work as embodied in a con-v structioncomprising a work support of the is connection with I frequentadjustment of the heretofore ,to make clamping relation to the f whichwill operate automatically and Wlll Patented Sept. 24, 1918l-Seria1No.4,936. I

that the range of compression of this spring shall not be too great,'and', mo'reov'er,it is 5' found to be desirable not to attempttop'r'o-- vide, in the automatic compensating adjust-'= ment of the worksupport releasing =mec'haf nism, for the accommodation of a very great.range of'variations in the heights or thicknesses'of the differentpieces of work to be operated upon, since thereby the efficiency of theoperation of this mechanism is likely to be seriously reduced;

In machines of-this kind provision is us'u-f support upon its carrier'so that. when the work is clamped theposition of the "work supportcarrier may be kept withinc'omparatively narrow limits. It has beennecessary heretofore to effect this adjustment by hand, and, when.inserting slugs or other faste'nings in the heels or in the heel seatsof'shoesi 0n the last, proper presentation of the work and properrelease for feeding has required-I work support upon its carrier owingto the lack of uniformity in the positions, depths and conditions of thelast pin holes in the lasts,to differenc'es in the heights of heels, todifierences in the heights of lasts and to other 'causes tending to alack of uniformity in the work. Because of the inconvenience andundesirability of the above describedadjustment-ofr the work support, ithas been the practice this adjustment only when about to operate uponshoes of a differentstyle5 or when the shoes: were upon lasts of adifferent type or height or were 0 a markedly different size. Theoperator has a usually, therefore, made this adjustment of 90 the worksupport only when starting upon a new case of shoes, with the resultthat the. slugging or fastening inserting operation has been affected initsquality more or less by 'eason -'ofimproper support oflthe work dueto the variations in the work, above pointed out. An important objectofthe present invention is to provide means for adjusting the worksupportto adapt ittofthegdiffer'entc.

variations inth e work, above mentioned,

effect the adjustment of the worksupport for each piece of work. g i a j6 tion is the provision of means tlon is shaft, as more fully Anotherobject of the invention is to provide improved work support adjustingmeans which will be general utility where conditions similar to thosedescribed above are present. 7 1 'An' important feature of the inventionis the construction and arrangement of the work support adjusting meansso that an initial adjustment of the work support upon its carrier iseffected to adapt it to the par ticular piece of work to be operatedupon and the work support is then locked to its carrier in thisadjustment. After work clamping relationship has been establishedbetween the work support and the abutment the control of the worksupport is left to automatic controlling means of the general typeemployed in such machines while the machine is performing the seriesofoperations which are to be performed upon this piece of work; Anotherimportant feature of the invenfor looking a work support thus adjustedto the machine frame, whereby an accurately adj usted,rigid support forthe work is provided for each inserting operation.

Other objects and important features of the invention will appear fromthe followinn description and claims when considered in connection withthe accompanying drawings, in which, I

Figure l is a side elevation of a slugging machine in which aworksupport embodying the present invention has been incorporated;

Fig. 2 is a. detached perspective of the work support and a portion ofthe connections by which the automatic adjustment is controlled V Fig. 3is a longitudinal section through the locking mechanism;

Fig. 4 is a perspective detail showing the principal elements of thelocking mechanism in separated relation;

1*" ig. 5 is a perspective view of the mechan sm for, intermittentlydepressing the work support; and

ig. 6 is a perspective view of the eccentrically mounted fulcrum for thelock operating bell-crank, said fulcrum being removed from its bearings.

The slugging machine in which this inven shown as incorporated is of'thetype illustrated and described in United States etters Patent to L. A.asgrain, No. granted February 18, 1913, and comprises, as more fully setforth in said Letters Patent, a base or standard 10 which supports ahead 12 in which is journaled the main driving shaft 14, from which across shaft 114 is driven by a worm and gear connection, not hereinshown. From this cross set forth in said Letters Patent, the startingand stopping of the fastening inserting operation is controlled andabove suggested, is of the pivot pin 26 having viewed in Fig. 1 a leverarm 188 is caused to I rock a rock shaft 186 which controls the movementof the awl 162 into and out of operative relation to the insertingmechanism. The awl 162, when in operative position, is swung laterallywith a swinging head to feed the work Upon the cross shaft 114 iscarried a cam, more fully shown and described in said Letters Patent, bywhich the work support carrier is raised into its operative positionbefore the beginning of the fastening inserting operation.

The illustrated work support, as: hereinjack type, and comprises aspindle 20 in the upper'end of which is adjustably secured in awell-known manner a last pin holder 22 carrying a last pin 24-. Thespindle 20 at its lower end is secured by a set screw 25 (Fig. 2) to a Jhearings in cars 28 of a rocker foot 30, said rocker foot being ofthetype illustrated and described in United States Letters Patent to W.H. Cuff, No. 9l9,i24,- 'ranted April 27, 1909, and being provided withteeth 32 which mesh with corresponding teeth 34 in a rocker bed 86carried by a slide 38 arranged to slide vertically in guides 40 in adepending portion of a bracket 12 having at its upper end a sleeve 4L4:which is clamped upon the horn or jack post 46 by clamping screws A bolt50 passing through an enlarged opening in the rocker foot 30 preventsthe com plete separation of the rocker foot 30 from the bed 86. Theslide 38 is provided below the bed 36 with teeth 52 with which cooperatetwo dogs or pawls 54, 56, the pawl 54 being wider than the pawl 56, andbeing slotted at 58 to receive the pawl 56, the two pawls being pivotedupon a common pivot pin 60. The teeth of the paw-ls 54T and 56 are soinclined that they; tend to operate in opposite directions so far astheir locking action is concerned. The purpose of providing two pawls,which serve to lock the jack to the jack post against relative movementthereof in either direction. is to insure the movement of the jack awayfrom the work abutment during the work releasing operation. as well asto provide .a positive connection to the jack post to receive the impactof the fastening insert ing operation. Springs 62 coiled about a pin 64extending between the sides 66 of the slide recei ing portion of thebracket 12 act at one end uponcthe upper portion of the pawl and forceits tooth toward the ratchet teeth and at their other ends upon the tail68 of the pawl 56 to force its tooth also toward the ratchet teeth 52upon the slide 38. The tail 68 of the pawl 56 has upon its under sideabevel face 70,

and the tail portions 72 of the pawl 54- have upon their rear facesbevel portions 74,;the bevels 70 and 74 being so related to each otherthat they may be engaged substantially simultaneously by the pawldisengaging member adjustably connected to the front end of a lever .7 y

bolt 80 having a shouldered nut 82 received in a slot 84 insaid member 76. At its rear end the lever 7 8 is connected by alink 86 to anarm 90upon therock shaft 186 of' the awl controlling mechanism hereinabovepins 96 on thebracket42. It will benoted that in this figure the pawldisengaging 7 member 76 is located between the tails of the pawls, andthe pawls are disengaged from the ratchet teeth'52. When the machine isto be rendered op rative to insert the fastenings, as morefullydescribed in the Letters Patent above referred to, the shaft 114 hasimparted to it a half turn and as it turns it operates to raise the jackpost .46, thereby through the bracket 42 raising the pawls 54 and 56until theirtails 68 and 72 are moved out of releasing relation to themember 76, when "the pawls will.

engage the ratchet teeth 52, thus locking the ack in the position ofadjustment with respect to the jack post 46 in which it has been held bythe springs 92 and causing the jack to partakethereafterof the movementsof the jack post. v V

Inthis machine, as in the machine of the Letters Patent above referredto, the work supportis automatically depressed between the successivefastening inserting operations to permit the work to be fed easily intoposition to receive the succeedingfastening, and

means is provided for automatically bringing to bear upon the worksupport thc clamping pressure of a strong spring before the fasteninginserting mechanism is ren- "dered operative to insert fastenings andfor removing this pressure and lowering the post 46 after the insertingmechanism has been rendered inoperative. The mechanism for effecting theinitial raising and final depression of the post 46 is substantiallyidentical with that of the Letters Patent hereinabove referred'to, andcomprises a cam upon'the end of the shaft 114 remote from that shown inFig. 1, which cam is given a half turn .to

V raise the post 46 when the inserting'mech anismf is :irenderedoperative-as "more fully described in' said Letters :Patent}.Themechanism for intermittently depressing the work support to releasethe Work for feed ing is ofthe type of that. shown in Letters Patent No.1,108,133, August 25,1914, L. A.

Casgrain, and is illustrated sufliciently for theapurposes of thepresent disclosure in Figswo and 6 of the drawings.

"Referring. to Figs. land 5, the ack post '46 restsfupona support 460towhich the upper link 462' of a toggle is pivotally connected, thesupport 460 comprising a-studor spindle1464 which projectsup into thehollow interior of the post 46. The lower link 47 0 oftheztoggle ispivotally connected to a slide 440. To lower and raise the work support,means is provided for breaking and straightening-the toggle, theillustrated means comprising a rod 47 2 pivotally connected atone end tothe knee joint 4740f the. toggle andat its other end pivotally againstmovement by the spring 268', more fully shown and described in saidLetters Patent No. 1,108,133, when the toggleis broken, and also forlocking the slide 440,

when the" toggle is straightened, to'provide a.

rigid support for'the work during the fasten ing inserting operation.The illustrated means comprises a plurality of locking plates 480spacedfrom eachother and attached by the rivet-482 to the'slide 440,the

plates 480 alternating with'a second set of locking plates 484 attachedto andcarried by the casing 442. The illustrated means for pressing therespective sets of plates into locking engagement with each otherdiffers slightly from" that shown in said Letters Patent No. 1108,1355,and comprises a slid-' ing bolt 492 having in its rear end-a notch 498wider at itsopen'end than atits bottom, a tooth 494 upon the upper endof a bell crank 495, fulcrumed upon an eccentrically mounted fulcrum491,- being arranged to be moved into engagement with said notch 493,whereby said'bolt 492 may be moved into and out of operative lockingrelation to the plates as saidbellicrank is rocked upon its fulcrum.Thebell crankmovement of the lever 497 is transmitted by) the rod 496 tothe bell crank 495; and the belt 492 is thus moved in proper timerelation to the straightening and breaking of the toggle 462, 470.

When the tooth 494 upon the bell crank 495 i inthe position shown inFig. 5 of the drawings, the movement of the bell crank is nottransmitted to the bolt 492, although the bell crank is constantlyrocked by reason of its connection with the constantly rotating mainshaft 14. To move the tooth 494 into operative relation to the notch 493at the proper time in the operation of the machine, means is providedforturning the eccentrically mounted fulcrum 491 in its bearings, theillustrated means comprising a crank arm 500 clamped upon the extension501 of the concentric portion of the fulcrum member 491, said crank armbeing provided at its outer end with a wrist pin 502 which is connectedby a link 503 to an arm 504 rigidly clamped upon the rod 264 by which.

t e work support is automatically raised mtowork supporting positionwhen the machine is started, as more fully set forth in said LettersPatent No. 1,108,138, above re ferred to. When. the machine is to berendered operative for inserting fastenings, the rod 264 isautomatically depressed to rock the lever224 and raise the work support,bringing to bear upon the Work support the clamping pressure of thespring 268, and this downward movement of the rod 264 turns the crank500 in a counter-clockwise direction in Fig. 5, and raises theeccentrically mounted fulcrum of the bell crank 495 so that the tooth494 comes into operative relation to thenotch 498.

The springs 92, which effect the'automatic adjustment of the jack withrespect to the jack post, are preferably of such length and of suchstrength that, when the jack post 46 is in its lowered position, thesesprings will press the work against the foot plate or Work abutment 851with a light yielding pressure, sufficient, however, to insure the quickadjustment of the jack to the thicknes of the work. As the jack post israised before the inserting mechanism is rendered operative, the tensionon the springs 92 will be increased, thus insuring the maintenance ofthe work against the foot plate 351 until 7 initial the pawl disengagingmember 76 has been moved out of engagement with the tails of the pawlsand has thus permitted the pawls 'to lock the slide 38 to the bracket42. The

spring 268 is preferably of'such strength compared with the springs 92that, in the work support adjusting operation, substantiallv nocompression of the spring 266 takes place before the work support islocked to its carrier. r

The operations of the various elements of the work support controllingand adjusting mechanism have been described in connection with a detaildescription of these .ele-.

ments, but for the sake of clearness the op eration of the mechanism asa whole will now be described. The parts being in the position shown inFigs. 1 and 2, the operator places the last upon the last pin 24 therebydepressing the jack against the tension of the spring 92, these springs,as hereinabove set forth, be ing strong enough to hold the top liftlightly against the foot plate 351 so that. the operator can easilylocate the shoe in proper relation to the gage or gages usually providedin machines of this type. The op-v erator now manipulates the manualcontrol of the actuating mechanism, more fully described in LettersPatent No. 1,053,479, hereinabove referred to, thereby causing the haft114 to be connected to the constantly rotating shaft 14. Turning of theshaft. 114 through a half rotation operates, through connections to thelever 224, to raise the jack post 46, said connections comprising therod 264 and the spring 268 which is compressed to place spring pressureupon the jack post as soon as the upward movement of the jack post isprevented by the locking of the jack to the jack post and the clampingof the work, the rod 264 then moving relatively to the lever 224. As thejack post moves upward it carries with it the thus moved out ofengagement with the pawl releasing member 76 shortly after the upwardmovement of the jack post begins. In the illustrated machinesubstantially a quarter of the total movement which would be imparted tothe jack post, were it entirely free to move, is utilized in moving thepawls out of engagement with the releasing mem-. ber 76, so that thebalance of said movement of the jack post raising mechanism is utilizedin compressing the spring 268 to clamp, the work under spring pressure.After the pawls are permitted to move into engage ment with the ratchetplate to lock the jack to the jack post and after the clamping pressurehas been placed upon the work, the sliding bolt 492 is moved in thedirection to cause the plates 480 to be locked to the plates 484, theeccentric fulcrum 491 for the bell crank 495 having been. turned duringthe jack post raising operation by the connections to the rod 264,comprising the arm 500, the link 503 and the arm 504. At this time thetoggle 462, 470 is substantially in straightened condition, a slightstraightening movement following the clamping to gether of the plates480 and 484 to apply to the work a further clamping pressure.

The machine now tening and, after the awl has entered the work to forman opening to receive the next fastening and before it starts to move inthe direction to feed the work, the rod 472 is moved in the direction tobreak the toggle 462, 470 to lowerthe jack post, the plates e80, seebeing maintained at this time in looking relation to each other wherebythey prevent the spring 268 from acting upon the jackpost during theWork releasing operation. As the toggle is again moved towardstraightened position the sliding bolt 492 is drawn back to unlock theplates 4:80, dSd' to permit the spring 268 to cooperate in adjusting thework support to the work in the event that the thickness of the work atthe point at which the succeeding fastening is to be inserted is greateror less than that previously clamped. In the event that the thickness ofthe work should increase con siderably, thus tending to bring the jackpost into such position that the pawls 54, 56, during the work releasingmovement of the jack post, might move into engagement with the pawlreleasing member 76, thus causing a new adjustment of the j ack upon thejack post, means has been provided for moving the pawl releasing member7 6 out of the range of movement of the pawls as the machine is renderedoperative to insert fastenings in order to prevent unnecessaryadjustments oi the jack upon the jack post while the machine isoperating upon the piece oi? work for which it has been initiallyadjusted. Although such adjustments would not effect the quality of thework, they are objectionable in that they tend to wear the partsneedlessly. The means :for moving the member 76 out of the path ofmovement of the pawls at this time has been 'hereinabove described, andcomprises the lever '78, link 86 and arm 90 upon the rock shaft 186. Asthe awl 162 is moved into operative position by the rocking of the rockshaft 186 the arm 90, through its connections tothe lever 7 8, moves themember 76'out of the path of movement of the pawls5d, 56.

Having fully described my invention, what I claimas new and desire tosecure by Letters Patent of the United Statesis:

1. In a machine of the class described, which comprises mechanism forperforming aseries of operations upon work, and means for efiecting arelative feeding movement of the 'workand said mechanism betweensuccessive operations, the combination with a-work support comprisingmembers relatively movable to adjust the support to different workthicknesses, of means for automatically effecting such relative movementadjustment for saidseries of operations betore said operatingmechanismbegins to op- V v ably -mounted sprlng connections between tomamtam'saad parts normally in extended erate upon the work.

2. In amachine of the' class described,

the combination with a work support and 'means, including work thicknesscompensating mechanism, for depressing the work support to permit thework tobe :t'ed freely, of means for automatieally,eitecting an initialadjustment of said work support to the thickness or the work before theoperating mechanism is rendered operative, and means for maintainingsaid adjustment whilethe machine continues to operate upon a piece ofworktor which the adjustment has been effected," I j v V 3. In a machineof the class described, a work support, a work abutment, means op-jerating to cause said work support normally to clamp'thework againstsaid work abut ment when the machine is operative, means comprising workthickness compensating successive operations of the machine thereon,

and means for automatically effecting an ini tial relative adjustmentof" the work support and its operating means to the'thi'ck ness of thework tosecure substantial um formity 0t clamping pressure upon differentpieces of work.

t. In a. machineof the class described, the combination with a workabutment, a work supportand controlling means operating betweensuccessive operations of a series performed upon a single piece of workto effect relative work releasing and work clamping movements of saidsupport and said abutment, of means, governed in its operation by theclamping of the work for the initial operation of the series, forautomatically effecting a relative, adjustment of of work.

5. In a ma'chine'of the class-described, a"

work support, a carrierfor saidwork support, conuectlons between saidparts whereby they are normally yieldingly maintained in extendedrelation a means acting uponsaid carrier for automatically bringing saidcarrier into predetermined relation to said abutment whereby a yieldingrelative movement of said; work support and said carrier is effected,means :for automatically locking said work support. to said carrier inthe relation which said parts assume at the end of said relativemovement, and means for thereafter effecting final work clamping thework support and the abutment.

, relationship between .120 v 6. In a machine" of the classdescribed,work support, a carrier for said Work su-pwork abutment, i

port iupon which -s'aid work support is slid-"'- said work'support andsaid carrier tending said carrier in the adj ustcd relation to whichsaid parts are thus moved, and means for thereafter moving said partstogether while a series of operations is being performed upon the workfor which they have been ini tially adjusted.

7. In a machine of the class described, which comprises mechanism forperforming a series of operations upon work and means for effecting arelative feeding movement of the work and said mechanism between successive operations, a work support, a carrier for said work support,connections between said work support and said carrier whereby saidparts are normally yieldingly main tained inextended relation, a workabutment, means for bringing said carrier into predetermined relation tosaid work abut ment whereby a relative movement oi. said carrier andsaid Work support is effected, means for locking said work supportrigidly to said carrier in the relation which these parts assume at theend of said relative movement, and means for automatically ef tecting amovement of depression of said carrier and work support, of uniformextent, between the successive operations upon the work. 7

8. In a machine of the class described, which comprises mechanism forperforming a series of operations upon work and means for efl ecting arelatii e feeding movement of the work and said mechanism between succesive operations, a work support, a carrier for said work support uponwhich said work support is adj ustably mounted, a work abutment, meansoperating automatically before the series of operations upon the workbegins for effecting an adjustment of said work 'supportupon its carrierwith respect to the work gaged between said support and said abutmentand for lockmg said work support rlgldlyto said carrier after said adustment hasbe'eneiiected, and means operating automatically to eii'ectan adjustment of said rigidly connected work support and carrier withrespect to said abutment after each operation upon the work and forlocking said carrier against movement for the succeeding operationuponthe work.

9. In a machine of the class described, which comprises mechanism forperforming a series of operations upon work, a work abutment, a worksupport comprising relatively movable members, means for effecting I amovement of said worksupport into operative work su nortin relation tosaid abutment, constructed to cause a relative movement of said memberswherebysaid work i support is adjusted to the thickness of the 7 work,means for locking saidmembers together after such adjustment and meansfor locking said work support against bodily movement before eachoperatlon upon the i work. ,7 c

10. I11 a machine of the class described, which comprises mechanism forperforming a series of operations upon work, a work abutment, a worksupport comprising relatively movable members, means for efiecting amovement of said work support into operative work supporting relation tosaid abutment, constructed to cause a relative movement of said memberswhereby said work support is adjusted to the thickness of the work,means for locking said members together after such adjustment, means foreffecting a bodily movement of said work support to release the work andagain clamp it after each operation upon the work constructed to effectalways the same-amount of movement of said work support, and means forlocking said work support against bodily oration upon the work.

11. In a machine of the class described, the combination with a worksupport, comprising relatively movable members, and work supportreleasing mechanism constructed to eliect a uniform releasing movementof the work'after each operation there. on, of means for effectingautomatically :1

relative movement of adjustment of the members of said work supportbefore the initial operation upon the work and for locking said membersin their position of ad ustment.

movement before the succeeding op- 12. In a machine of the classdescribed,

ment of said carrier to move said work support into work supportingposition and causing an adjustment of said work support upon saidcarrier in proportion to the thickness of the work, means for lockingsaid work support to said carrier in the adjusted relation, and meansfor locking said carrier to the machine frame.

13. In a machineof the class described, the combination with the machineframe, a work abutment, and a work support, of a carrier for said worksupport upon which said work support may be adjustedto suit it to thethickness of the work, means for imparting a predetermined movement tosaid carrier and for simultaneously effect ing the adjustment of saidwork support upon said carrier, means for locking said work support tosaid carrier in the ad support is caused to clamp the work against thework abutment, and means for locking said support'in work clampingrelation.

1%. In a machine of the class described, thecombination with the machineframe, a work abutment and work supporting means, said abutment and saidwork supporting means being relatively for movable into Ja elle workcaliperingrelation .to each other, and said work supporting meanscomprising members relatively movable to ad ust said -support to thethickness of the work, of

work abutment and work supporting means,

said work supporting means comprising members normally yieldinglymaintained in extended relation, of means acting ,automatically toefiect a relative work clamping and work calipering movement ,of saidabutment and said work supporting means, constructed to effect, byreason of the interposition of the work, a relative movement of saidmembers to adjust said supporting means to'the thickness of the work,and means acting automatically to lock said members together in theiradjustedrelation and to'lock said work support to the machine frame.

16; In a machine for performing a series of operations upon a piece ofwork'which is moved relatively thereto, a work support, a carrier uponwhich said work support is self-positioning to suit it to the generalcharacteristics of the work, means operating initially to move thecarrier relatively to the work support, means operating automatieally tolock said support to the carrier in adjusted position before said seriesof operations begins, and means operating automatically to move thecarrier to release the work for feeding movement thereof between thesuccessive operations. I

17. In a machine for performing a series of operations upon a piece ofwork which is moved relatively thereto, a Work abutment, a work support,a carrier'upon which said work support is self-positioning to suit it tothe thickness of the work, saidwork support being movable to presentthe'work' to the machine, means operating automatically to lock saidsupport to said .carrier in adjusted relation and means for thereafterbringing said parts into work clamping relation to said abutment. v

18. In a machine for performing a series of operations upon a piece ofwork which is moved relatively thereto, a work support, I a said worksupport adjustable to suit it to the general 'chars.

a carrier upon which acteristics of the work, means operatingautomatically to cause said work support to present the work to themachine and to effect thefladjustment of said work support upon saidcarrier, and means operating automatically to lo k said work support tothe carrier before said series of operations begins, said last namedmeans being con- "interposed said support to structed and arran 'edto.maintain said work supportglooke tojthe carrier during the series ofoperations.

V 19'. In a machine for performing aseries of operations upon a piece ofwork which is moved relatively thereto, a work support, a

carrier for said Work support, yielding connections between saidcarrierand said work support whereby said work support may ad-l justitself to the thickness of the work as the work ispresented to themachine, and means operating automatically to lock said work support tosaid carrier before the series. of operations begins, constructed tomaintain said parts in the adjusted, relation during the series'ofoperations.

20. In a machine for performinga. series of operations upon apiece ofwork whichisfl a a work support, a,

moved relatively thereto, carrier for said work support, yielding. con

port to permit initial, relative adjusting movement of thework'support-and,the'care rier, means operated by movement of saidcarrier relatively'to said work-support before said series of operationsbegins to lock said work support automatically to the carrier, and meansfor thereafter movingsaid work support and carriertogetherf during saidseries of operations.

21. In a machine for'performing a series of operations upon a piece ofwork which is moved relatively thereto, a work abutment, a work supportyieldingly held normally substantially in work presenting relation'tosaid abutment, a movable carrier for said work support upon which saidwork support is yieldingly adjustable as the work is betweensaidaabutmentv and said support, and meansrendered operative by initialmovement of said carrier 7 said carrier in adjusted position, said meansbeing constructedand arranged to maintain said GillIlGE-iifllld saidwork support lockedin adjusted relation during the series of operations.1 I

, 22. Ina machine ofthe' class worki'abutment a work support, a movablecarrier for said work support-upon which SillCtWOIfk support isyieldingly adjustable as the work isinterposed between said abut mentand said support, means'rendered -op-- erative by the movement of saidcarrier for for locking.

described, a

'85 nections between saidcarrier and said. suplocking said support tosaid carrier, and; I

means, comprising a spring, for effecting such movement andbrlngmgclamplng pressure to bear upon the work.

9 In a machine of the class described, in

combination with the machine frame, a work support, a carr er for Baldwork support,

yielding connections between said carrier and said work support wherebysaid work support may by the presentation of the work, meansrenderedoperative by a relative movement of be adjusted uponjsai'dcarrier said carrier and said. support for locking said support to saidcarrier, and means cooperating with the machine frame for thereafterlooking said support rigidly against movement. v

24, In a machine ofthe class described, a work abutment, a work support,a movable carrier for said work support upon which said support isyieldingly movableinto different positions of adjustmentby theinterposition of the work between said abutment and said support, meansoperated by a relative movement of said support and said carrier forlocking said support to said carrier, and means for thereafter movingsaid sup port and said carrier together,

' 25. In a machine of the class described, a work abutment, a worksupport, a movable carrier forsaid work support upon which said worksupport yieldingly adjustable as the work is interposed between saidabutment and said support, means rendered operative by the movement ofsaid carrier for locking said support to said carrier, and means.operating through said carrier for placing a predetermined clampingpressure upon the work after said locking operation.

26. In a machine of the class described, a work abutment, a'worksupport, a movable carrier for said work support upon which said worksupportis yieldingly adjustable as the work is interposed bet-ween saidabutment and said support, means rendered operative by the movement 01"said carrier for locking said support to said carrier, means operatingthrough said carrier for placing a predetermined clamping pressure uponthe work after said locking operation, and means for locking saidcarrier rigidly against move-v ment after said predetermined clampingpressure has been applied.

'27; In amachin'e of the class described, a work support, a carrier-uponwhich said work support is self-positioning to accommodate itspositionto the thickness of the work, connections between said partstendingnormally to maintain those parts yieldingly in extended relation,a work abutment, means for automatically locking said work support tosaid carrier in the relation which said parts assume as determined bythe thickness of the work, and means for thereafter effecting final workclamping relationship between the work supportand said abutment.

. In a machine of the class described which comprises mechanism forperforming a ser es or operations upon work and means for effecting arelative feeding movementof the work and said mechanismbetweenrsucces'sive operations, work support comprisingmembersrelatively movable to adjust the support to different work thicknesses,of means comprising interlooking parts carried by said members fortionot adjustment for said operating mechanism be the combination with aautomatically effecting such relative move ment and locking said membersin the posi- Said series of operations before gins to operate upon thework.

In a machine of the'class described which comprises mechanismfor-"performing a series of operations upon work and means for effectinga relative feeding movement of the work and said mechanism betweensuccessive operations, a work support, a carrier for said work support,means for moving said carrier from work-receiving to work-clampingposition, and'connections between the work'support and carrierpermitting movement of the work support relatively tothe carrier toadjust the work support to different thicknesses of work and comprisingmeans'to lock to the carrier in adjusted position for said series ofoperations upon the movement of the carrier from work receivingposition.

30. In a machine of the class described which comprises mechanism forperforming a series of operations upon work and means for effecting arelative feeding movement of the work and said mechanism betweensuccessive operations, a carrier, a work support mounted on said carrierfor movement relatively thereto, means for intermittently lowering thecarrier to release the work for feeding between successive operations ofsaid mechanism, means for eliecting a final lowering movement of thecarrier of greater extent than the wor releasing movement to permit theremoval of the workfrom the work support, connections between the worksupport and carrier constructed and arranged to maintain the worksupport in interlocked engagement with said carrier dur-' ing the workreleasing n'iovements of the carrier, and means'to release the worksupport from locked engagement with the carrier upon the final movementof the carrier to work removing position; V

31. In a machine of. the class described, which comprises mechanism forperforming a series or" operations upon workand means for effecting arelative feeding movement of the work and said mechanism betweensuccessive operations, a carrier, a work sup port mounted on saidcarrier for movement relatively thereto, means for raising said carrierfrom work receiving position, means for locking the work support to thecarrier upon the Work support c mg said locking means,

the cart er and work support intermittently to permit relative feedingmovement of the work and said mechanismfbetween successive operations ofsaid mechanism for automatically moving said releasing means to aposition 'outof the path of movement of the locking means andmaintaining the releasing means in such 'position during and means meansfor lowering the performance of a series of operations by saidmechanism.

32. In a machine of the class described, a

carrier, a work support slidably mounted on said carrier, means mountedon said carrier and work support for locking the work support to saidcarrier, means for moving said carrier to and from work receivingposition, and means engaged by said locking means upon movement of thework support to Work receiving position and operating to unlock the worksupport from the carrier.

33. In a machine of the class described, a carrier, a work supportslidably mounted on the carrier, means for locking the work support tothe carrier comprising interlocking parts carried by the work supportand carrier constructed and. arranged to be normally in lockedengagement with each other, means for moving said carrier to and fromwork receiving position, and means operating upon movement of saidcarrier to work receiving position to unlock the work support from thecarrier. 25 34. In a machine of the class described, a carrier member, awork supporting member slidably mounted on said carrier member, meansfor locking the work supporting member to the carrier member comprisingcoop- 30 erating parts carried by said members, and

Copies of this patent may be obtained for five cents each, by addressingthe means mounted on one of said members for maintaining said partsnormally in looking relation to each other, means for moving 7 saidcarrier member to and from Work receiving position, and means operatingupon 35, movement of said carrier member to Work receiving position tounlock the Work supporting member from the carrier member.

35. In a machine ofthe class described, a carrier member, a worksupporting member 40 slidably mounted on said carrier member, means forlocking the work supporting member to the carrier member comprisingteeth formed on one of said members and a pawl carried by the other ofsaid members normally maintained in looking relation with said teeth,means for moving said carrier member to and from work receivingposition, and means operating upon movement of said carrier member towork receiving position to disengage the pawl from said teeth and unlockthe work supporting member from the carrier member.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

' LOUIS A. CASGRAIN.

Witnesses: IRA C. BUoKMINsTnR, RAYMOND A. KNAPP.

"Commissioner of Patents,

Washington, D. 0."

